Bently Nevada 330500-03-00 Velomitor Piezo-velocity Sensor

Description

330500-03-00: Velomitor Piezo-velocity sensor with Option 03 (1/4-28 UNF mounting thread) and Option 00 (no agency approvals required). This sensor is a specialized piezoelectric accelerometer designed to measure absolute casing, bearing housing, or structural vibration in industrial rotating machinery. The device utilizes solid-state electronics to convert vibration motion into a proportional output, providing a consistent 100 mV/in/s velocity signal.

The 330500 incorporates an integrated piezoelectric sensing element that avoids the mechanical wear associated with traditional moving-coil velocity transducers. This allows for flexible mounting in vertical, horizontal, or angled orientations. It is suitable for monitoring machine malfunctions such as unbalance and misalignment by capturing vibration transferred from the rotor to the machine casing.

Features

• 1/4-28 UNF mounting thread (Option 03)
• Solid-state piezoelectric design with no moving parts to prevent mechanical degradation
• 100 mV/in/s sensitivity for reliable vibration monitoring
• Frequency response range of 4.5 Hz to 5 kHz
• 316L stainless steel, hermetically-sealed case for environmental durability
• 2-pin Mil-C-5015 connector interface

Applications

• Bearing housing vibration monitoring
• Casing and structural vibration measurements
• Rotating machinery protection (unbalance and misalignment detection)
• General purpose industrial vibration sensing

Ordering Information

Technical Specifications

Installation Guidelines

• Install the sensor on the machine bearing housing or casing for optimal coupling.
• Avoid installation on surfaces with poor vibration transmission, as this may degrade signal amplitude or frequency response.
• Ensure the mounting surface is clean and matches the 1/4-28 UNF thread specification of this unit.
• Tighten within the specified mounting torque of 24-40 in-lb to ensure reliable signal transmission.
• The case is isolated; ensure appropriate grounding practices are followed for the installation environment.

Compliance and Certifications

• CE compliant
• RoHS Directive 2011/65/EU
• FCC Rules Part 15
• ABS Marine Vessels compliant